Thomas Fillon

AI & Software Lead @ Stealth MedTech

Paris, Île-de-France, France

About

10+ years of experience across strategy consulting and startups, delivering impactful solutions in healthcare, tech, and data-driven products. Skilled in AI/ML development, product leadership, and building tools. Passionate about leveraging technology to solve complex challenges and enhance user experiences.

Experience

  • AI & Software Lead at Stealth MedTech
    Apr 2025 - Present · 1 yr 3 mos

  • Freelance Consultant - Data & Tech at Koonst
    Dec 2019 - Present · 6 yrs 7 mos

    I run Koonst, a freelance consultancy through which I support companies on high-impact data, software, and AI projects. Engagements have been project-based, with a focus on the intersection of data strategy, engineering, and applied machine learning. Representative Projects: - Media Sector (2018–2019): Led the data team at a European media company. Oversaw ML- and AI-based initiatives to improve content discovery as well as analytics initiatives. - Cloud Infrastructure (2022): Designed and deployed a large-scale batch processing pipeline for a data science workload on AWS Fargate. Focused on reliability and scalability. - Healthcare (2025): Modeled strategic scenarios for a healthcare organization using domain-specific constraints and forecasting logic. - Healthcare (2025): Led AI and software integration for a US-based medical technology company. Focused on real-time clinical data flows and model-driven decision support.

  • Chief Technology Officer at Fivegem
    Dec 2023 - Oct 2024 · 11 mos

    Conceived and developed a new social network to foster cultural recommendations (movies, series, books, exhibitons, ...), leveraging LLM both to bring new user features and simplify the tech architecture.

  • Mindmesh (YC S21) (Paris, Île-de-France, France)
    • Chief Technology Officer
      Jun 2023 - Oct 2024 · 1 yr 5 mos

    • Senior Software Engineer
      Jun 2022 - Jun 2023 · 1 yr 1 mo

  • majelan (3 yrs 8 mos)
    • Chief Technology Officer
      Aug 2020 - Jun 2022 · 1 yr 11 mos

    • Chief Data Officer
      Nov 2018 - Aug 2020 · 1 yr 10 mos